Console server

Sentinel32, with 2 power supplies

Connecting to the SCS

The SCS has two uplinks, one is on an independent uplink from the colo's network (to allow out of band access even in case our switch is dead/unreachable), one is on our internal network:

• External IP: 64.156.25.110
• Internal IP: 10.0.0.220

Use ssh scs from a server of the cluster, or ssh scs-ext.wikimedia.org from anywhere

SCS commands

• connecting to a server in interactive mode: connect server_name
• escape interactive mode: Esc + A (uppercase)
• symlinks to the serial ports and their buffers: /lsi/ports
• save saves configuration changes to non-volatile memory
• lsp lists the serial ports and their names
• lsc lists active connections
• stty configures serial port parameters, but to make the changes permanent, /etc/rc.d/rc.serial must be edited
• to rename a port: stty -F /lsi/ports/port23 --name=zwinger
• to clear a port buffer: stty --clear -F /lsi/ports/buf_name
• read chapter 9 of the manual (linked below) for more

The port connectors are in four chunks of 8 ports, upper and lower rows of four. In each chunk the bottom four ports are labelled 1-4 and top 5-8. Leftmost chunk is ports 1-8, then 9-16, 17-24 and 25-32:

5/5 6/6 7/7 8/8  5/13 6/14 7/15 8/16  5/21 6/22 7/23 8/24  5/29 6/30 7/31 8/32
1/1 2/2 3/3 4/4  1/ 9 2/10 3/11 4/12  1/17 2/18 3/19 4/20  1/25 2/26 3/27 4/28 

Current Configuration

1: will
2: alrazi
3. avicenna
4. bacon
5. dalembert
6. diderot
7. friedrich
8. goeje
9. harris
10. suda
11. hypathia
12. humbroldt
13. kludge
14. kalduhn
15.
16.
17. zwinger
18. larousse
19.
20. srv27
21. srv28
22. cisco
23. srv29
24. srv30
25. webster
26. holbach
27. samuel
28. albert
29. srv50
30.
31. alder
32. areil

links

• http://www.thinklogical.com/products/console_servers/sentinel32.php
• review http://www.sunhelp.org/review-hardware-sentinel32.php (through archive.org)
• manual http://www.thinklogical.com/support/manuals/scsManual.pdf
• software updates ftp://ftp.thinklogical.com/SCS/updates/
• photos of it, taken by mr_bill http://www.mrbill.net/photos/consoleserver/ - appears to be down